using Newtonsoft.Json;
using System;
using System.Collections.Generic;
using System.Net.Http;
using System.Text;

namespace New_College.Common
{
    public class CasdoorHttpHelper
    {

        /// <summary>
        /// 获取accesstoken
        /// </summary>
        /// <typeparam name="T"></typeparam>
        /// <param name="code"></param>
        /// <returns></returns>
        public static T Post_AccessToken<T>(string code) where T : new()
        {
            var authinfo = new T();
            try
            {
                string requestUri = string.Format("{0}/api/login/oauth/access_token", CasdoorConfig.Endpoint);
                var httpClientHandler = new HttpClientHandler
                {
                    ServerCertificateCustomValidationCallback = (message, certificate2, arg3, arg4) => true
                };
                using (HttpClient httpClient = new HttpClient(httpClientHandler))
                {
                    var content = new StringContent(Newtonsoft.Json.JsonConvert.SerializeObject(new CasdoorRequest() { code = code, grant_type = "authorization_code", client_id = CasdoorConfig.ClientId, client_secret = CasdoorConfig.ClientSecret }), Encoding.UTF8, "application/json");
                    var responseStr = httpClient.PostAsync(requestUri, content).Result.Content.ReadAsStringAsync().Result;
                    var obj = JsonConvert.DeserializeObject<T>(responseStr);
                    return obj;
                }
            }
            catch (Exception ex)
            {
                throw ex;
            }
        }



        /// <summary>
        /// 刷新token
        /// </summary>
        /// <typeparam name="T"></typeparam>
        /// <param name="refresh_token"></param>
        /// <param name="scope"></param>
        /// <returns></returns>
        public static T Post_RefreshToken<T>(string refresh_token, string scope) where T : new()
        {
            var authinfo = new T();
            try
            {
                string requestUri = string.Format("{0}/api/login/oauth/refresh_token", CasdoorConfig.Endpoint);
                var httpClientHandler = new HttpClientHandler
                {
                    ServerCertificateCustomValidationCallback = (message, certificate2, arg3, arg4) => true
                };
                using (HttpClient httpClient = new HttpClient(httpClientHandler))
                {
                    var content = new StringContent(Newtonsoft.Json.JsonConvert.SerializeObject(new CasdoorRefeshToken() { refresh_token = refresh_token, scope = "built-in", grant_type = "authorization_code", client_id = CasdoorConfig.ClientId, client_secret = CasdoorConfig.ClientSecret }), Encoding.UTF8, "application/json");
                    var responseStr = httpClient.PostAsync(requestUri, content).Result.Content.ReadAsStringAsync().Result;
                    var obj = JsonConvert.DeserializeObject<T>(responseStr);
                    return obj;
                }
            }
            catch (Exception ex)
            {
                throw ex;
            }
        }




        private class CasdoorRequest
        {
            public string grant_type { get; set; }
            public string client_id { get; set; }
            public string client_secret { get; set; }
            public string code { get; set; }
        }



        private class CasdoorRefeshToken
        {

            public string grant_type { get; set; }
            public string client_id { get; set; }
            public string client_secret { get; set; }
            public string scope { get; set; }

            public string refresh_token { get; set; }

        }

    }










}